Republican debate as it happened: GOP candidates descend on California for second presidential debate

A welcome sign is seen before the second official Republican presidential candidates debate of the 2016 U.S. presidential campaign at the Ronald Reagan Presidential Library in Simi Valley, California, United States, September 16, 2015.REUTERS/Lucy Nicholson

The "undercard" debate featuring the following candidates-- Lindsey Graham, Rick Santorum, Bobby Jindal and George Pataki--has wrapped up. Analyst on CNN and data from Google Trends reveals Lindsey Graham is the winner of the earlier debate.

Only 15 candidates, of the 16 candidates, will participate in the second GOP debate after former Texas Governor Rick Perry became the first candidate to end his White House bid. Former Virginia Governor Jim Gilmore did so poorly in the polls he did not qualify for either debate.

For those who want to catch the debate online, CNN will make the entire debate available for free at CNN.com.

Minutes after the wrap up of the main debate, analyst and Twitter appear to agree that Carly Fiorina came out on top. According to Google Trends, Donald Trump, Fiorina and Jeb Bush were the top three searched candidates during the debate.

The war in Iraq and Jeb Bush's older brother, former President George W Bush's, is now a hot topic. Trump and Paul voice their opposition to the war and said the world is a less safe place because of it. Bush and Rubio, however, that President Bush should not be blamed for the current situation in the Middle East.

Marco Rubio calls Donald Trump on failing to know enough about foreign policy, saying the next president needs to know from "day one" how to keep the US safe. Trump responds by attacking Rubio's record on voting in the Senate.

Taxes is up next: Huckabee suggests eliminating taxing those who "produce." Meanwhile, Ben Carson discusses his plan of bringing in tithing, or a one/tenth tax. Surprising to many, Trump advocates taxing high earners more.

For a refresher on the 14th Amendment, which is discussed in the debate on birthright citizenship.

All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the state wherein they reside. No state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any state deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.

Talk turns to immigration. Trump argues that undocumented immigrants should be deported, the US borders should be strengthened and immigrants should learn English. Rubio, who has worked for comprehensive immigration reform, says the border should be secured but largely disagrees with Trump's plans.

After claiming he would take care of women and respect women if elected, Trump is called out for his comments on Carly Fiorina's face in his interview with Rolling Stone. Fiorina says that she believes "women all over the country" understood what Trump meant in his comments.

While many of the candidates go after President Obama about failing to interfere in Syria, Rand Paul argues that bombing Syria may have made it easier for Isis to gain control of Damascus. Meanwhile, Ted Cruz discusses Iran and its attitudes against Israel and the US.

Like the first debate, Carly Fiorina is showing voters she is incredibly well versed in the issues. When discussing the issue of Russia presence in Syria. Fiorina outlines her foreign policy, saying, "Russia is a bad actor. But Vladimir Putin is someone we should not talk to."

Like the first debate, the first questions in the main event turn to GOP front-runner Donald Trump. Female candidate Carly Fiorina does not take the bate and says she trust the American voters to do the right thing. In his response, Trump calls out Rand Paul.

Paul says that Trump cannot be trusted with his finger on the nuclear codes. Trump's response: